<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<script>
window.onload = function ()
{
			var oTab = document.getElementById('tab1');
			var oldColor= '';
	
			for(var i =0 ;i<oTab.tBodies[0].rows.length;i++)
				{
					oTab.tBodies[0].rows[i].onmouseover = function()
					{
								oldColor = this.style.background;
								this.style.background = 'yellow';
					};
					
					oTab.tBodies[0].rows[i].onmouseout = function()
					{
						this.style.background = oldColor;
					};
					
					if(i%2)
						{
							oTab.tBodies[0].rows[i].style.background = 'red';
						}
					else
						{
							oTab.tBodies[0].rows[i].style.background = '';
						}
				}
};
</script>
</head>

<body>
<table id="tab1" border='1' width='500'>
	<thead>
		<td>ID</td>
		<td>姓名</td>
		<td>年龄</td>
	</thead>
	<tbody>
		<tr>
			<td>1</td>
			<td>Albert</td>
			<td>25</td>
		</tr>
		
		<tr>
			<td>2</td>
			<td>test</td>
			<td>22</td>
		</tr>
		
		<tr>
			<td>3</td>
			<td>test2</td>
			<td>23</td>
		</tr>
		
		<tr>
			<td>4</td>
			<td>test3</td>
			<td>26</td>
		</tr>
		
		<tr>
			<td>5</td>
			<td>test4</td>
			<td>28</td>
		</tr>
	</tbody>
	
</table>
</body>
</html>
